1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.systemui.settings;
18
19import android.app.Dialog;
20import android.content.Context;
21import android.content.res.Resources;
22import android.os.Bundle;
23import android.os.Handler;
24import android.view.Window;
25import android.view.WindowManager;
26import android.widget.ImageView;
27
28import com.android.systemui.R;
29
30/** A dialog that provides controls for adjusting the screen brightness. */
31public class BrightnessDialog extends Dialog implements
32        BrightnessController.BrightnessStateChangeCallback {
33
34    private static final String TAG = "BrightnessDialog";
35    private static final boolean DEBUG = false;
36
37    protected Handler mHandler = new Handler();
38
39    private BrightnessController mBrightnessController;
40    private final int mBrightnessDialogLongTimeout;
41    private final int mBrightnessDialogShortTimeout;
42
43    private final Runnable mDismissDialogRunnable = new Runnable() {
44        public void run() {
45            if (BrightnessDialog.this.isShowing()) {
46                BrightnessDialog.this.dismiss();
47            }
48        };
49    };
50
51
52    public BrightnessDialog(Context ctx) {
53        super(ctx);
54        Resources r = ctx.getResources();
55        mBrightnessDialogLongTimeout =
56                r.getInteger(R.integer.quick_settings_brightness_dialog_long_timeout);
57        mBrightnessDialogShortTimeout =
58                r.getInteger(R.integer.quick_settings_brightness_dialog_short_timeout);
59    }
60
61
62    /**
63     * Create the brightness dialog and any resources that are used for the
64     * entire lifetime of the dialog.
65     */
66    @Override
67    public void onCreate(Bundle savedInstanceState) {
68        super.onCreate(savedInstanceState);
69        Window window = getWindow();
70        window.setType(WindowManager.LayoutParams.TYPE_VOLUME_OVERLAY);
71        window.getAttributes().privateFlags |=
72                WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
73        window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
74        window.requestFeature(Window.FEATURE_NO_TITLE);
75
76        setContentView(R.layout.quick_settings_brightness_dialog);
77        setCanceledOnTouchOutside(true);
78    }
79
80
81    @Override
82    protected void onStart() {
83        super.onStart();
84        mBrightnessController = new BrightnessController(getContext(),
85                (ImageView) findViewById(R.id.brightness_icon),
86                (ToggleSlider) findViewById(R.id.brightness_slider));
87        dismissBrightnessDialog(mBrightnessDialogLongTimeout);
88        mBrightnessController.addStateChangedCallback(this);
89    }
90
91    @Override
92    protected void onStop() {
93        super.onStop();
94        mBrightnessController.unregisterCallbacks();
95        removeAllBrightnessDialogCallbacks();
96    }
97
98    public void onBrightnessLevelChanged() {
99        dismissBrightnessDialog(mBrightnessDialogShortTimeout);
100    }
101
102    private void dismissBrightnessDialog(int timeout) {
103        removeAllBrightnessDialogCallbacks();
104        mHandler.postDelayed(mDismissDialogRunnable, timeout);
105    }
106
107    private void removeAllBrightnessDialogCallbacks() {
108        mHandler.removeCallbacks(mDismissDialogRunnable);
109    }
110
111}
112